Canon iR1200 Series Service Manual page 113

Cartridge
Delivery
The machine's sequence of operation is controlled by the CPU on the image processor PCB and the CPU on the DC
controller PCB. The following figure shows the sequential flow, and the following table provides descriptions of the
periods involved.
when the power ON and, in
addition, the toner bottle fitted,
the reader unit and the toner
supply cover are put back.
Return from ESS mode
Period
WAIT
(wait)
Static image formation block
1.Primary charging
7.Drum cleaning
6.Fixing 5.Separation
Power ON
or
or
Wait Standby
Definition
From when the power
is turned on until when
the application of the
primary charging AC
bias is started and
stopped.
2.Laser exposure
3.Development
4.Transfer
Registration
Cassette
flow of paper
rotation of drum
F-3-5
End of printing
If a print command is received
during last rotation
Initial rotation Print
If continuous printing is selected
F-3-6
T-3-1
Purpose Remarks
The machine's A check is made on the
mechanical and presence/absence of a cartridge
electrical states are and for paper remaining inside
checked. the machine. The machine also
shifts the WAIT state when the
power ON and, in addition, the
toner bottle fitted, the reader
unit and the toner supply cover
are put back, or after returning
from ESS mode.
Chapter 3
Manual feed tray
Last rotation
3-9